Damn Thermoquads.

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Referring to the fire video, IMO, there in lies the problem. It's not the carb it's the operator. Evidently priming it with gas (maybe too much), goes to start it, when it fires an explosion happens possibly due to no exhaust on it. Look where the flame originates. I doubt many high school folks had the "know how".
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I do know that these could be a real pain in the ***.................

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Everybody has their take on carbs , I ve had tq and chevys and q jets , tq and q jet very similar , both run lean and I currently run a q jet on my daily driver (Yes have chevys too) and I converted it to manual choke but don t use it 1/2 the time (only in -5deg.F and under)I just squirt a few shots and it starts then I got to pedal jockey it for 30 seconds and then it ll idle. Sometimes it will stumble and stall , just squirt crank and go...Should be the same for tq holley afb weber bla bla so on and so forth , but to adress the OP's problem , in the tq there is a tranfer tube from the accelerator pump and since he is getting no shot from there and assuming there is gas in the carb(that issue wasn t ever cleared up in previous posts)so perhaps that tube is off or cracked , even though it starts with full choke on if there is no acc pump there will be a stumble on acceleration (or maybe you just like to ease into the throttle to mask your problem, Not me and I love to take bets with the EFI crowd on throttle response)... All to say when you troubleshoot somthing you have to be systematic and not just guess there is fuel in the bowls , check it , mark it as done ok and move on to the next step...
 
Also is your rebuilder experienced with these carbs , if not here is a scenario for you , he s done many carbs with success , takes yours apart (and lets assume for a minute that that tranfer tube has dry rotted and fallen to dust)cleans it puts it back together with new gaskets (maybe a kit , and you know kits always come with extraparts for other models)and leaves the tube aside in the kit because he never took one out of the carb. Not that he is a bad guy or mechanic , mistakes happen to the best of us (The guy that don t do no mistake ever , well you ll have to dig six feet to find him!)...
 
Can anybody find the article by "Steve Dulcich" with the 400 B engine and the use of a M1 single and TQ as well as a Weiand and a Holley build up?
 
W-Edge said:
..., mistakes happen to the best of us (The guy that don t do no mistake ever , well you ll have to dig six feet to find him!)...
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No, he wasn't buried, they had to roll the rock away and He wasn't there, He has risen!

Thay joker in the fire video was a fool. I like the fact that a Holley 1920 has a weep hole on the side that actually shoots fuel out the side when the pump diaphragm is bad, and these are mounted on top of the exhaust manifold on a slant. Brilliant! They all got their issues.
 
replicaracer43 said:
It's easy to tell people who have no mechanical ability, or brains. The TQ is arguably the best production carburetor offered during those years, it will make power, and is capable of more economy doing so.....
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I have plenty of mechanical experience and lots of brains. I can build any Carter or Edelbrock blindfolded and Holley's are my second favorite carb. I have built hundreds. I simply hate thermoquads and will throw every one of them I come across in a ******* dumpster
 
Yes , agreed there are 2 retards in that video , one whearing a baseball cap and the other a distributor cap(timing retard , get it! the timing is so late it dosent even sound like its firing but pukes a fireball out the manifolds!!!)Prolly an old 305 with a mile of timing chain stretch!
 
And then there s the water hose to spread the fire around , should always have extinguisers around ( for those really thrifty try corn starch)...He s really lucky he didn t burn his house down.
 
73AbodEE said:
I have plenty of mechanical experience and lots of brains. I can build any Carter or Edelbrock blindfolded and Holley's are my second favorite carb. I have built hundreds. I simply hate thermoquads and will throw every one of them I come across in a ******* dumpster
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Ya..I like this guy:D:D
 
What I want to know, is why that video ever got posted. If I was that guy, the very first thing I wouldda done after I got back from the hospital, was to destroy that footage. The world does not need to see such idiocy,er, insanity.
 
stroked340 said:
Ya..I like this guy:D:D
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Of course you do! But have you ever tuned a TQ? (2nd asking!)
73AbodEE said:
I have plenty of mechanical experience and lots of brains. I can build any Carter or Edelbrock blindfolded and Holley's are my second favorite carb. I have built hundreds. I simply hate thermoquads and will throw every one of them I come across in a ******* dumpster
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Let me save your arm from over extending during the throw, drop it in the mail to me.
W-Edge said:
Tuning the Carter Thermoquad Carburetor - TQ Dyno Dial Up! - Mopar Muscle
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Close, no cigar. Steve built a 400 IIRC and topped itwith a Weiand and a Holley 750 then switched it out for a M1 single and a TQ.
 
73AbodEE said:
I have plenty of mechanical experience and lots of brains. I can build any Carter or Edelbrock blindfolded and Holley's are my second favorite carb. I have built hundreds. I simply hate thermoquads and will throw every one of them I come across in a ******* dumpster
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Just cause you hate them, doesn't mean there's anything wrong with them, cause there's not. And I will also be happy to pay shipping on any unwanted thermoquads you want to throw away..
 
replicaracer43 said:
Just cause you hate them, doesn't mean there's anything wrong with them, cause there's not. And I will also be happy to pay shipping on any unwanted thermoquads you want to throw away..
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In my experience, and that would account for about 30 some years working on and playing around with pretty much nothing but mopars , I have rebuilt around 5 different bogs, and not a one would ever run right. I've also had a few buds over the years that have also attempted to build and run them usually ending in a swap for something else that would actually hold a tune and not shoot flames out of it. maybe I have the " thermobog" curse idk but I will never use one of those things ever again after that fire.
Oh and Rob has first dibs on any remains LOL
 
stroked340 said:
Really get out to the track sometime see how many racers are NOT using the "plastic carb"..You know the guys that race seriously..
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Really? Are you sure you've ever been to a drag strip? In Stock and Super Stock they run TQ's. And QJ's. And everything else. And they run hard.

Don't blame the carb. It's the tuner who is screwed up.
 
stroked340 said:
LMFAO...thats why we took them off and threw them in the trash..garbage plastic carb.
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Sorta like why you used a stock intermediate shaft on a high volume pump......Yall really knew your **** back then huh?
 
73AbodEE said:
In my experience, and that would account for about 30 some years working on and playing around with pretty much nothing but mopars , I have rebuilt around 5 different bogs, and not a one would ever run right. I've also had a few buds over the years that have also attempted to build and run them usually ending in a swap for something else that would actually hold a tune and not shoot flames out of it. maybe I have the " thermobog" curse idk but I will never use one of those things ever again after that fire.
Oh and Rob has first dibs on any remains LOL
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Oh, hey, now I HAVE had a few that were not repairable, that's for sure!
 
replicaracer43 said:
It's easy to tell people who have no mechanical ability, or brains. The TQ is arguably the best production carburetor offered during those years, it will make power, and is capable of more economy doing so.....
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It's weird isn't it? And until you've had one that was a great carburetor, you'll never understand how power and economy can be used in the same sentence, but it's true.
 
RustyRatRod said:
It's weird isn't it? And until you've had one that was a great carburetor, you'll never understand how power and economy can be used in the same sentence, but it's true.
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Agree, I mean holleys are ok too, they can make power, but not so great at power WITH economy....the primary booster design is a lot of why the TQ works so good in my opinion.
 
replicaracer43 said:
Agree, I mean holleys are ok too, they can make power, but not so great at power WITH economy....the primary booster design is a lot of why the TQ works so good in my opinion.
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I think you're right.
 
Well over the years Ive learned I don't care for folks that don't like dogs! Same with folks that say Thermoquads are trash, I wouldn't trust them to change my oil............
 
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